Former chairman of Punjab Information Technology Board (PITB) Dr Umar Saif failed to appear before National Accountability Bureau (NAB) Lahore on Monday in a matter concerning alleged irregularities during his sting as the top IT expert in the province.

Saif is accused of irregularities and nepotism in a number of projects during his service tenure and was asked to appear before NAB in an on-going investigation being carried out on charges of irregularities in the Punjab IT board.